收藏本站
NCP5021
U3
SFH5711
VSB
4
+VBat
VSB
GAIN
Log
4
R2
220k
AMBS
5
R
R/2
GND
1 2
GND
R1 22k
C1
2.2uF
U1
ANALOG
MONITORING
R/4
R
GND
I2C
R/2
R
2R
4R
Figure 12. Basic Photo Sense Input Circuit
Since several type of photo sensor can be used in the final application, provisions have been taken into account to dynamically
adjust the gain of the photo current. Such capability is carried out by the internal register loaded through the I2C port.
Table 13. PHGAIN[0..7]
B7
VSD
B6
0
B5
0
B4
PHG5
B3
PHG4
B2
PHG3
B1
PHG2
B0
PHG1
RESET
0
0
0
0
0
0
0
0
Bit [B7] : Photo sense VSD bias control
Bit [B7] : B7 = 0 3 VSD disconnected, photo sense function de ? activated
Bit [B7] : B7 = 1 3 VSD connected, photo sense function activated
Bits [B6:B5] : RFU
Bits [B4:B0] : Photo sensor gain adjust
When the photo sense returns a lower ambient light level in comparison to the maximum level set up by the user, the I ? LED
decreases with a timing defined by an I2C command. Such a timing is derived from the Low Frequency clock and selected
by the PHTIM register (see Figure 13).
Table 14. PHCLK[0..7]
B7
PHTT
B6
0
B5
PHT6
B4
PHT5
B3
PHT4
B2
PHT3
B1
PHT2
B0
PHT1
RESET
0
0
0
0
0
0
0
0
Bits [B7] : RFU
Bits [B6] : RFU
Bits [B5:B0] :
PHT1 = Photo sense clock = 25 Hz
PHT2 = Photo sense clock = 12 Hz
PHT3 = Photo sense clock = 6 Hz
PHT4 = Photo sense clock = 3 Hz
PHT5 = Photo sense clock = 1.5 Hz
PHT6 = Photo sense clock = 0.7 MHz
PHTT = Photo sense clock = 1.7 MHz
3 T = 40 ms/step
3 T = 80 ms/step
3 T =160 ms/step
3 T = 320 ms/step
3 T = 640 ms/step
3 T = 1280 ms/step
3 T = 560 ns/step 3 reserved for test purpose
NOTE:
The bits cannot be combined to generate a different timing.
http://onsemi.com
14
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
NCP5050MTTXG IC LED DRIVR PHOTO FLASH 10-WDFN
NCP5111DR2G IC DRIVER HI/LOW SIDE HV 8-SOIC
NCP5304DR2G IC DRIVER HI/LOW SIDE HV 8-SOIC
NCP5355DG IC DRVR SYNC BUCK MOSF 12A 8SOIC
NCP5359ADR2G IC MOSFET GATE DVR DUAL 8-SOIC
NCP5359DR2G IC GATE DRIVER VR11.1/AMD 8-SOIC
NCP5360RMNR2G IC DRIVER MOSFET 56QFN
NCP5366MNR2G IC DRIVER MOSFET DFN
相关代理商/技术参数
NCP502ASQ15T1 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq Voltage Regulator in an SC70−5
NCP502ASQ15T1G 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq, Low−Dropout Voltage Regulator
NCP502ASQ18T1 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq Voltage Regulator in an SC70−5
NCP502ASQ18T1G 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq, Low−Dropout Voltage Regulator
NCP502ASQ25T1 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq Voltage Regulator in an SC70−5
NCP502ASQ25T1G 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq, Low−Dropout Voltage Regulator
NCP502ASQ27T1 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq Voltage Regulator in an SC70−5
NCP502ASQ27T1G 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq, Low−Dropout Voltage Regulator